On 11 March 2020, the World Health Organization (WHO) declared coronavirus disease
2019 (COVID-19) as a pandemic. As of 22 April, more than 2.4 million cases have been …

Postintubation tracheal stenosis is a complication of endotracheal intubation. The pathological
mechanism and risk factors for endotracheal intubation-induced tracheal stenosis remain …

Background: Patients with pulmonary tuberculosis (PTB) have a high risk of concomitant
tracheobronchial tuberculosis (TBTB), which commonly causes severe complications such as …

Background Spirometry confers limited value for identifying small-airway disorders (SADs)
in early-stage COPD, which can be detected with impulse oscillometry (IOS) and …

Background: Hydrogen-oxygen mixture (H 2 -O 2 ) may reduce airway resistance in patients
with acute severe tracheal stenosis, yet data supporting the clinical use of H 2 -O 2 are …

Background The anatomic location of small airways, the distribution of airway cartilage, and
their correlation with ageing have not been well elucidated. The objective of this article was …

The coronavirus disease 2019 (COVID-19) outbreak originated in Wuhan, China, in December
2019. It has now affected 197 countries. By 27 April 2020, it was reported that 2 878 196 …

Background: A few studies have reported the medium-sized and small airway morphological
abnormalities of bronchiolitis. Whether spirometry or impulse oscillometry (IOS) is …

Lung cancer is one of the most fatal cancers in the world. To early distinguish benign and
malignant pulmonary nodule is critical for disease prognosis. Confocal laser endomicroscopy (…

Background A feasible and economical bronchoscopic navigation method in guiding peripheral
pulmonary nodule biopsy is lacking. Objective To investigate the utility of hierarchical …